Screw-down valve



1,618,844 Feb 22 1927' F. E. OWEN SCREW DOWN VALVE Filed Nov. 12, 1925menes Feb. 22.1921.

UNITED STATESA More :amar owen, or neuroni), ENGLAND. I

maw-Down vALvn.

Application #led November i8, llvserial No.

This: invention 4relates to water and like l valves or taps ofthescrew-down4 type andv has for its ob'ect to vrovide an improved'construction w ich sha .be more eliicient in 5 action andless liable toleakage ,than oo n- .g structions hitherto known, and equally suitablefor controlling hot and. cold water supi.lies. 1'

p The im roved' valve forming the subject o matter vrofp this inventioncomprises a cus shaped valve memberl which embraces an co-acts -with aseatingof tubular form pro- 'ecting from a. partition web separating theinterior of the valve bod or casing into 1nlet and outlet spaces. T isvalve member is arranged to slide without rotating in the body andcarries a screw-threaded shank which is engaged by an internallyscrewlthreaded hollow spindle. pro'ec'ting to the exterior 4of the valve body;is spindle carries an o erating handle or thumb-piece and is formes iuidtight joint with a gland in the cover of thevalve body.

As will readily be understood in turnin vthe operating spindle the valvewill be cause either 'to rise 4or fall in the valve body and so bringabout the opening or closin of the valve as desired. The outlet from t evalve is made of larger bore .than the inlet in order that the water mayhave a free discharge passage and owing tothe siphonic action set up byjthe discharging water the actual pressure existing above the valvemember is considerably reduced and in consequence the Atendency forwater to leak past the o rating spindle is'eliininated or considerab yminimized.A

The invention is hereinafter more fully 4o disclosed with reference tothe accompanying drawing wherein A,

preferred form of screw-down water tap constructed in-naccordancewith,my' invention and v Figure 2Ais a lan view of the same.

,The improve construction of water tap -tating therein by lugs e', eenga with an annular flange making a` Figure v-1 is a verticalsectionalview of a Vspindle;-

88,570, and in Great 'Britain' January 10, 1.925.

per-` part of the seating, so that an annular space exists- Abetween-these surfaces. A Washer e is'containedin the valve member for' contactwith the seating.

The valve member is ided for; vertical movement in a lchamber in the upYer part of the valve body and is prevented olinl roo tudinal grooves inthe walls o Itlie'eham- 65 ber. j A screwreaded stem g projectingaxially from thevalve member in an upwa ldirection engages withtheinternally screwthreaded hollow portion of an operating i spindle lawhich when rotated o crates to lift or depress the valve mein er. Thisspindle h is formed externally with an annular ange la. which is engagedwithin a stutling box e' provided at 'the upper part of the cover and isformed at its upper end with a squared shank h* en agedin acorresponding hole in the centra boss of a handle j which may have fourwings as in Figure 2 or two wings or be of any other suitable' pattern;A screw I: entering a hole in the upper end of the, s indle h has awidehead securing the han 1e ,in place. If vdesired such screws may beprovided with a name. tablet to indicate the nature of theservice towhich the tap is ap lied. 85 The cover 'is in tlie shape of an invertedcup, the cylindrical wall of which forms a skirt surrounding the wall ofthe chamber f. This cover is internally screw-'threaded at its upper endto en age with screw eo threads on the. outside o? the chamber f. Theskirt ofthe cover conceals the joint between the cover and the valve bodand forms a convenient means for manua y unscrewing lthe cover from and.on 'the valve 95 body, and for guiding the arts into pro r relativeposition and adds 'sh tothe va v e.

The outlet l from the valve which communicates with the upper side ofthe partitionweb b is of larger bore than 'the inlet loe in order thatthe water may have a free discharge passage and set up a siphonic actiontending 'to reduce the ressure existing above the valve member an tominimize the tendency of water to leak past` the operating I claim y Awater faucet comprising a body with a transverse partition separatingthe inlet and outlet spaces, a tubularA seating u stan 110 from saidpartition, a cylindrica upwar extension of said body, externally screwfthireadetll at'itsnpper end, .a cylindrical cup shaped valveco-operating wlth said `Aing' and having an externally threaded stem,

seatia `s indle for o r ting said valve, formed wit a threaderfesoketfor the reception of said stem, and with an external annular 1 flange, ascrew threaded cover for said cylindlieal extension, said covercqmprismg a skirthaving screw threads at its upper end .co-operating callextensio an 'annular boss rising' 'frein sald cover an a flange capsurmounting said signature.`

withv threadsoneaid boss, and -ferming therewith a stuilingboxllnbracing the external langeof said spine. y In test' ony4 wherecf hehas aixed his FRANCIS ERNEST OWEN.

